Valve mechanism



Nov. 10, 1936.. H. ROBERTS T AL. 2,060,748

VALVE MECHANI SM Filed Aug. 3l, 1954 l Il Hwa "portion of said cage.

Patented Nov. l0, 1936 UNITED STATES 2,060,748 vALvE MEoHANIsM Hardy Roberts, Devine, and Charles H. Robertson, Fort Worth, Tex.

Application August 31, 1934, Serial No. '142,296l

2 Claims. (Cl. 251-167) This invention relates toa valve mechanism. An object of the invention is to provide, in a ivalve mechanism, a novel type of seat.

' vAnother object of the inven-tion is to provide,

in a valve mechanism, a yieldable seat arranged to co-act with the valve whereby. a fluid tight joint will be secured between the valve and seat when the valve is seated and whereby the wear on the seat will be reduced to a minimum.

The valve mechanism herein vdescribed has been'specially designed for use on slush pumps, but the mechanism is capable of being adapted for use generally.

With the above and other objects in view the invention has particular relation to novel features of construction, operation, and arr'angement of parts, an example of which is given in this specification and illustrated in the accompanying drawing wherein: y

Figure 1 shows a side elevation of the valve mechanism, partly in section, and l Figure 2 shows a bottom-end view of .the valve and seat.

Referring now more particularly to the drawing wherein like numerals of reference designate similar parts in each of the figures. The numeral I designates the pump as a whole. This pump has a transverse partition 2, separating the intake chamber 3 from the discharge chamber 4 of the pump. The partition 2, has an opening 5, circular in form, to receive the lcage 6.. Its lower end is reducedand tted into the opening 5 and its upper end is widened, forming the annular shoulder 1 which rests on the partition 2. The widened portion of the cage has an inside annular groove 8 whose lower side has the widened flat base `9 and the upper end of the cage has the inwardly extending narrow flange I0. Seated within the groove 8 is a. ring II, preferably formed of rubber and whose upper end is reduced to t through the flange I and to form the external annular shoulder I2 which engages the lower side of said flange.

The upper end' of the ring II is provided with the upwardly flared face I3.

There is a metal gland I4 whose lower end fits closely within the cage 6 and whose upper end is widened, forming the external annular shoulder I5. The lower portion of the ring II is inwardly widened forming the vinternal annular shoulder I6, said inwardly thickened portion having its inner side flush with the adjacent inside The shoulder I of the gland Il rests on the shoulder I6 of the ring II and the upper end fof gland has the upliquid will pass out throughv the seat.

wardly flared face. The face I3 has substantially the vsame pitch as the face I'l but is elevated slightly above said face I1.

There is a valve I8 whose under side is provided with the upwardly flared face I9 arranged 5 to cooperate with the faces, I3, I'I, which form the valve seat. This valve has the wing-like. radial guides 2li which work through the gland i4 and assist in guiding the valve in its movements.

The top of the pump has an opening 2I aligned above the valve and which is closed by the cover plate 22 which is held clamped in place by the one yoke 23, in the usual way.

A coil spring 24 is interposedbetween the cover plate 22 and the va1ve I8 and normally holds the valve closed. The lower ,end of the cage 6 is inwardly thickened formingfthe inside annular shoulder 25 for cooperation with the guides 20.

Upon the suction stroke of the pump the liquid will be drawn into the chamber 3, the valve being closed and upon the discharge stroke of the pump the valve will be lifted and the pumped As the valve is lseated the face I9 will contact first with the face I3 which will yield and permit the valve to seat also against the face I1. The lower end of gland I4 is spaced above the flange 25 and said gland being yieldably seated on the resilient ring I I the face I 'I also will yield as the valve seats thereagainst to the end that the succeeding strokes of the valve against the face I1 will be by the appendent claims. V y

What we claim is:- 1. In a valve mechanism, a cage tubular in form and provided with an external annular shoulder forming a support, said cage having an inside annular groove above said support whose lower end forms a relatively wide base, the upper end -of the cage having an inwardly extended narrow flange, a resilient ring tted in said groove whose upper end is reduced to iitthrough said flange, forming an external annular shoulder which engages the ilange, the lower side of said ring resting on said base, said ring having an inside annular shoulder, a tubular metal gland fitted closely through said ring and whose lower end has a loose slidable t in the cage and whose upper end is widened forming a shoulder which rests on the inside shoulder of said ring, the upper end of said gland and ring being upwardly flared to form a seat.

2. In a valve mechanism, a tubular cage provided with an external annular shoulder forming a support, said cage having an inside annular groove above the support, whose lower end forms a wide base, the upper end of the cage having an inwardly extended narrow ange, a resilient ring tted in said groove and whose upper end is reduced and tted through the ilange and formed with an external annular shoulder which engages the underside of the flange, the lower side of the ring resting on said base, said ring having an inside upwardly facing annular shoulder, a, tubular metal gland tted closely through said ring and whose lower endis loosely tted into the cage, and whose upper end is widened forming an annular shoulder which rests on the inside shoulder of the ring, an internal annular shoulder in the cage spaced beneath the lower end of 'the gland, the upper end of said gland and ring being upwardly ared to form a seat. 

